1 84 



NEW YORK STATE MUSEUM 



Male. Length 2 mm. Antennae light brown, basally yellowish; 

 19 segments, the fifth with a length a little less than its diameter; 

 terminal segment slightly prolonged, broadly rounded distally. 

 Palpi; the first segment narrowly oval, with a length about one-half 

 greater than the diameter, the second one-half longer than the 

 first, somewhat stouter, subrect angular, the third a little longer 

 and more slender than the second, the fourth one-half longer than 

 the third, compressed and somewhat dilated apically; face fuscous 

 yellowish with a conspicuous patch of silvery white scales. 



Mesonotum dark brown, broadly and irregu- 

 larly margined laterally and anteriorly with 

 silvery white, the submedian lines thickly 

 clothed with short, yellowish setae. Scutel- 

 lum dark brown, naked, postscutellum dark 

 brown. Abdomen dark brown, the basal 

 segments naked and pale salmon basally, 

 broadly margined distally with silvery white, 

 the second, third and fourth segments nar- 

 hM§ II '1 II ij rowly margined posteriorly with silvery 



Ijojl 111 iJ white. Genitalia fuscous yellowish; venter 

 sparsely clothed with silvery white scales. 

 Wings hyaline, costa dark brown, the whit- 

 ish discal spot just before the basal half ; the 

 third vein uniting therewith just before the 

 basal half; halteres pale orange. Coxae and 

 base of femora pale yellowish, the femoro- 

 tibio articulations irregularly yellowish trans- 

 parent, the other portions of femora and 

 tibiae a variable brown, the tarsi dark 

 brown; claws rather long, stout, strongly 

 curved, .the pul villi as long as the claws. 

 Genitalia; basal clasp segment. long, roundly 

 truncate; terminal clasp segment slightly 

 swollen at the base, dorsal plate broad, 

 broadly and deeply incised; ventral plate 

 short, broad, broadly rounded. Harpes 

 short, stout, tapering. 



Female. Length 2 mm. Antennae dark 

 brown, basally yellowish; 23 segments, the 

 fifth with a length about one-half its di- 

 ameter; terminal segment somewhat pro- 

 duced, obpyriform. Palpi yellowish fuscous distally, the first seg- 

 ment irregularly sub quadrate,' slightly swollen distally, the second 

 one-half longer, stout, the third one-half longer than the second, more 

 slender, the fourth twice the length of the third, more slender. 

 Abdomen dark brown, the first segment thickly clothed with silvery 

 white scales, the second to fourth segments inclusive rather broadly 

 rr argined posteriorly with silvery white scales, sixth, seventh and eighth 

 very narrowly so; venter fuscous with a broad, median stripe of sil- 

 very white scales, ovipositor pale yellowish. Wings hyaline, costa 



Fig. 31 Neolasiop- 

 tera sambuci, 

 galls about natural size, 

 one mostly eccentric 

 and the other sectioned 

 (original) 



